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. Author manuscript; available in PMC: 2013 Sep 10.
Published in final edited form as: J Biomed Nanotechnol. 2013 Sep;9(9):1441–1470. doi: 10.1166/jbn.2013.1642

Figure 14.

Figure 14

SEM images of silicon-nanowire-coated silicon microbeads applicable as oral drug delivery carriers due to their ability to (a) adhere onto epithelial surface of the intestine by entwining with microvilli on the cell surface and (b) open the tight junction spacing in-between individual cells and enhance paracellular transport of the drug the particles are loaded with via the capillary effect.